US2019346038A1PendingUtilityA1

Hydraulic circuit

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Assignee: KOMATSU MFG CO LTDPriority: Mar 14, 2017Filed: Mar 13, 2018Published: Nov 14, 2019
Est. expiryMar 14, 2037(~10.6 yrs left)· nominal 20-yr term from priority
Inventors:Kei OmaeMasaki Shiohara
F16N 39/06F16N 2250/34F16N 29/00F16N 2210/04F16N 39/02F16N 7/40F16N 21/00F16N 2210/12F16N 2200/04F16D 55/36F16D 65/853B60T 17/221F16H 57/0405F16H 57/0415F01M 11/02F01M 5/002F16H 57/0436F01M 11/10F16H 57/042F16D 2065/787F01M 1/02F01M 11/08F16H 57/0402
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Claims

Abstract

A hydraulic circuit includes a hydraulic pump configured to supply lubricating oil, a resisting apparatus configured to maintain an oil pressure of the lubricating oil supplied from the hydraulic pump, an oil supply channel configured to guide the lubricating oil from the hydraulic pump to the resisting apparatus, and an optical detector configured to measure a degree of contamination of the lubricating oil flowing through the oil supply channel.

Claims

exact text as granted — not AI-modified
1 . A hydraulic circuit comprising:
 a hydraulic pump configured to supply lubricating oil;   a resisting apparatus configured to maintain an oil pressure of the lubricating oil supplied from the hydraulic pump;   an oil supply channel configured to guide the lubricating oil from the hydraulic pump to the resisting apparatus; and   an optical detector configured to measure a degree of contamination of the lubricating oil flowing through the oil supply channel.   
     
     
         2 . The hydraulic circuit according to  claim 1 , further comprising:
 a lubricating oil filter disposed along the oil supply channel,   the optical detector being positioned on an upstream side of the lubricating oil filter.   
     
     
         3 . The hydraulic circuit according to  claim 1 , wherein
 the resisting apparatus is a hydraulic apparatus configured to agitate the lubricating oil on an inside thereof.   
     
     
         4 . The hydraulic circuit according to  claim 3 , wherein the resisting apparatus is a transmission. 
     
     
         5 . The hydraulic circuit according to  claim 1 , wherein
 the resisting apparatus is a cooler.

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